Ratchet handle pipe cutter



Dec. 28, 1954 A. MOIVEYR RATCHET HANDLE PIPE CUTTER Filed Dec. 51, 1952United States Patent RATCHET HANDLE PIPE CUTTER V I Americus McIver,Bronx, N. Y. Application December 31, 1952, Serial No. 328,870

2 Claims. (Cl. 30-102) This invention relates to ratchet handle pipecutters.

It is an object of the present invention to provide a ratchet handlepipe cutter which includes a hinged, closable ring containing adjustablepipe cutting elements, the central periphery of said ring on the outerside thereof being formed with rachet teeth which cooperate with aplurality of spring urged ratchets carried by a separable, hinged handlering closable on said first ring and fixedly connected to an elongatedhandle.

It is another object of the present invention to provide a ratchethandle pipe cutter of the above type including a pipe cutting elementand cooperating, pipe-supporting rollers which are adjustable relativeto each other to accommodate pipes of varying diameters.

It is still another object of the present invention to provide a ratchethandle pipe cutter of the above type into which a pipe to be cut may beconveniently inserted.

Other objects of the present invention are to provide a ratchet handlepipe cutter of the above type and hearing the above objects in mindwhich is of simple construction, inexpensive to manufacture, has aminimum number of parts, is compact, durable, is easy to use andefficient in operation.

For other objects and for a better understanding of the Y invention,reference may be had to the following detailed description taken inconnection with the accompanying drawing, in which:

Fig. 1 is an end elevational view of a ratchet handle pipe cutterembodying the features of the present invention;

Fig. 2 is a vertical sectional view taken along line 22 of Fig. l andshowing the outer, handle ring broken away to show the interiorconstruction thereof;

Fig. 3 is a vertical sectional view taken along line 3-3 of Fig. 1 butwith the outer, handle ring removed and showing the inner ring in anopen position and Fig. 4 is a view similar to Fig. 3 but with the innerring removed.

Referring more in detail to the drawing, in which similar referencecharacters identifying corresponding parts throughout the several views,there is shown a ratchet handle pipe cutter, referred to collectively as10, and including an inner cylindrical member consisting of segments 11and 12 hingedly connected by a pin 13, substantially as illustrated.

The free ends of segments 11 and 12 are integrally formed with ears 13near each end thereof which receive lock screws 14 whereby to secure thesegments together, as shown in Figs. 1 and 2.

The inner face of segment 11 fixedly carries a pair of laterallyaligned, substantially L-shaped brackets 15 which rotatably mount acutting disc 16. The segment 12 diametrically opposite from the disc 16is provided with a pair of internally threaded hubs 17 which receive adustment screws 18, the inner ends of which fixedly carry triangularbrackets 19. As shown in Fig. 1, the brackets 19 are of channel crosssection and rotatably mount rollers 20 near each end of segment 12.

The central, outer periphery of segments 11 and 12 are integrally formedwith ratchet teeth 21, substantially as illustrated.

An elongated handle 22 is integrally formed at one end with a pair ofarcuate segments 23 adapted to enclose a portion of cylinder 11, 12 andto receive therebetween the outwardly extending ratchet teeth 21, asshown in Fig. 1. The outer ends of segments 23 are pivotally connectedto arcuate segments 24 and 25 by means of ice pins 26. The segments 23,24, 25 are adapted to completely enclose the cylinder 11, 12, as shownin Fig. 2. the free ends of segments 24 and 25 being integrally formedwith ears 27 which receive lock screws 28 whereby to secure the segments23, 24, 25 about the cylinder 11, 12, with ratchet teeth 21therebetween.

There is provided a ratchet connection between the segments 23, 24, Handcylinder 11, 12 which may be of any suitable form. This ratchetconnection has been shown in the drawing to consist of the ratchet teeth21 and a pair of suitable, spring-urged ratchets 29 and 30, the ratchet29 being mounted intermediate the spaced, parallel. segments 24 whilethe ratchet 30 is mounted intermediate the spaced, parallel segments 23directly above handle 22.

In operation, the cylinder 11, 12 is opened, as shown in Fig. 3, toreceive the pipe 31 therewithin between supporting rollers 20 andcutting disc 16, the cylinder 11, 12 then being closed by means of ears13 and lock screws 14, as shown in Fig. 2. The screw 18 will be adjustedto raise or lower the rollers 20 until the pipe is properly positionedagainst the cutting disc 16. It will be noted that this adjustmentpermits the device to be used on pipes of varying diameters.

With the pipe thus positioned, the segments 23, 24, 25 are assembledabout the cylinder 11, 12, as shown in Fig. 2, with the teeth 21therebetween and the ratchets 29 and 30 in mesh with the latter. Thesegments 23, 24. 25 are then secured in the aforementioned position bymeans of lock screws 28 as will be obvious, the pipe then being readyfor cutting by angular movement of handle 22.

When it is desired to insert a new pipe, the above operations arereversed to bring the new pipe into the cutting position. 1

It should now be apparent that there has been provided a ratchet handlepipe cutter which includes a hinged, closed ring containing adjustablepipe cutting elements, the central periphery of said ring on the outerside thereof being formed with ratchet teeth which cooperate with aplurality of spring-urged ratchets carried by a separable, hinged handlering closable on said first ring and fixedly connected to an elongatedhandle. It should also be ap' parent that there has been provided aratchet handle pipe cutter of the above type including a pipe cuttingelement and cooperating, pipe-supporting elements or rollers which areadjustable relative to each other to accommodate pipes of varyingdiameters, and between which a pipe to be cut may be readily and easilyinserted.

While various changes may be made in the detailed construction, it shallbe understood that such changes shall be within the spirit and scope ofthe invention as defined by the appended claims.

Having thus set forth and disclosed the nature of my invention, what isclaimed is:

l. A ratchet handle pipe cutter comprising a pair of substantiallysemi-cylindrical segments hingedly con nected together along one oftheir longitudinal edges, ears integrally formed on the outside of eachof said segments near the other of their longitudinal edges,corresponding ears on each of said segments being aligned with eachother, said aligned ears being internally threaded, lock screwsconnecting said aligned ears within said internally threaded portions, apipe cutting disc rotatably mounted on the inside of one of saidsemi-cylindrical segments near the central portion thereof, a pair ofadjustable setscrews threaded through the other of said segmentsdiametrically opposite from and on either side of said cutting disc,substantially triangular brackets fixedly carried at one corner thereofby the inner ends of said set-screws, said brackets being ofchannel-shaped cross section, a pair of rollers rotatably mounted ineach of said brackets within the channel-shaped portions thereofadjacent the other corners thereof, a plurality of complimentary,arcuate pairs of spaced, substantially parallel segments hingedlyconnected to each other and adapted to encircle said semi-cylindricalsegments when the latter are in a closed position, an elongated handlefixedly connected at one end to one spaced pair of said arcuatesegments, ears integrally formed in and connecting the free ends of theendmost pairs of spaced, arcuate segments, said ears being adapted toalign with each other when said spaced segments encircle saidsemi-cylindrical segments, said aligned openings being internallythreaded, a lock screw within said aligned, internally threadedopenings, ratchet eth integrally formed in said semi-cylindricalsegments at. the central, outer peripheries thereof adapted to be receivd. intermediate said spaced pairs of arcuate segments, and a plurality,of spring-urged ratchets mounted interediate. s id spaced, arcuatesegments and in operative engagement with said teeth.

2. A ratchet handle pipe cutter according to claim 1, id pl rality ofspring urged ratchets, mounted intermediate said; spaced, arcuatesegments and in operative engagement with said teeth including a firstratchet aligned with the end of said handle, and a second ratchetrotated substantially ninety degrees from said first ratchet.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 784,445 Sylvester Mar. 7, 1905 1,031,261 Helm July 2, 19121,117,225 Nash Nov. 17, 1914 1,344,428 Nonneman June 22, 1920 1,393,156Nonneman Oct 11, 1921

